Luminous projectile.



F. ZIEGBHFUSS.

` LUIIIGUB PIOXEOTILE.

nruonlol nu nro. u. ma.

rammed Aug. 25, 19m

-fplrojectile shell. so

-of the UNITED STATES -PnTENT oEEIoE.I

FRIEDRICH ZIEGENFUSS, 0l ESBEN-ON-THE-RUHB, GERMANY, ASSIGNOB TO FRIED.

XI'UPP AKTIENGESELLSCHAFT, 0F ESSEN-ON-THE-RUHR, GERMANY.

LUMINOUS PMJECTILE.

Bpeclncation of Letters Patent.

Patented Aug.- 25, 1914.

application mea member as, una.` semi m. 738,761.

ment in Luminousl Projectiles,iof which the following is aspecification.

This invention relates to luminous projectiles and has for its purposeto increase the strength and duration of the illuminating effect ofthese projectiles.

n the accompanying drawing, one embodiment of the invention isillustrated, and in said drawing Figure 1 is an axial lon i tudinalsection of a luminous projecti e; Fig. 2 is a section on thevline 2-2 ofFig. i; and Fig. 3, shows on a small scale a view of an illuminatingbody with a descending parachute.

The illuminating projectile as is known of illuminating projectiles thatreceive a large number of ighting bodies, has a constrluctionsimilar toa base chamber schrapne A designates the shell of the Iprojectile, B thebase chamber charge, C the driving disk and D the time fuse which withthe aid of a front end bushin l?. is connected with the rom the timefuse D, two

re tubes F, .which are located in grooves a (Fig. 2) of the projectileshell, lead to the base chamber charge B. The fire tubes l" stand incommunication with the igniting char d of the time fuse, through themedium of bores d of the timefuse and openings e' which are provided ina disk e,

ront end bushing E. Ijhe'projectile space receives two illuminatingodies, each of which is provided, iii a known manner, with a parachuteL. Each li hting body a lighting mass G, w ich. is located a pot-shapedcontainer H of the interior xrriiameter of the projectile .und isretained in the container H by a cover plate K carrying a bolt J. In thecover plates K, openings`k are provided, which terminate ata ring gl ofressed powder suitable for i iting the illuminating mass and embedd inthe illuminating mass G. Bolts J are screwed into the bottoms of therespective containers and 'are formedd outside ofthe container, into aturning stu i* for a swivel h* to which the parachute L is secured.Furthermore, two studs la' are arranged on each'container H which engagein grooves a' (Fig. 2)- of the projectile shell Vwithin the projectileVoccurs in the and prevent turnin f of the illuminating bod in theprojecti e shell.

'l ic coiitainei H for the illuminating mass of the lower illuminatin`body rests through its open side immediate y upon the driving disk C.This is provided with recesses for the cover late K :is well as itsfastening means, an beneath the openings c with igntinopenings c, sothat the fire of the charge can immediately reach the powder ring g ofthe lower illuminating body. The 'container H of the upper illuminatingbody supports itself with its base u on two telescoped bushings Mand N,which rest upon the bottom of the container H of the lower .illuminatinbody. Upon its open side the container lies a ainst the disk e1 of thefront end bushing In the disk e as well as inthe inclosing cover d' forthe igniting chare d2 of the time fuse, o enings e are provi which 'theame of the igniting charge d* can reach the powder ring g of the upperlightin body. V

The ushin M and N receive the aracliutes L 'of t e two lightingI bodies.ach

bushin com rises two half cylinders (F ig.

2), so t at a r ejection of the illuminating body, the will be separatedunder the in- Huence o centrifugal force' and release the parachute.Between the two parachutes, a disk P is arranged; whichA can be suitablyproduced from paper or the like. The inner bushing N is-desirable inorder to facilitate thelinsertion of the parachute of the up r lightingbodv.

e insertion o the illuminatin body iollowing manner: First, the filledcontainer H of nn illuminating -body is inserted in the projectile shellin. suchl a manner that it rests with its open side upon the drivingdisk C, whereupon the outer bushing M is set up upon the bottom of thecontainer H and the arachute 'is pressed into the hollow of this.Bushing. The arachute will then fill approximatelv the whole of thebushing M. The disk I is now laid upon the arachute within the bushingM, the inner ushing N is placed upon the rim of the disk P, and theparachute of the second illiuuiniituf.T body is placed in `4the bushingcontainer H of the second illuminati body is laced u on the rim of thebushing N an then with the aid of a press, the bushing N together withthe illuminating body ed, through IUI) Then the 'f restinv upon it ispressed into the projectile until tie container H of the u perilluminating body rests upon the bushing M. In accouiplishing this, therim of the disk P will be crimped downward by the bushing N, and thevbushing N comes to rest upon the bottoni of the under container Il.'Ilie paravhutes are in thisl manner extraordinarily lirmly pressedtogether, so that the metallic parts (wires) of the paraehutes, whenunder the iniiuciu-e of theI force of inertia Set up upon tiring theprojectile, cannot move and, therefore, caiinotproduce any destruc tionof the material of the parachutes.

The operation of the projectile is as folof the time fuse i nites,immediately, the illuminating mass nii the up er illuminating body and,through thc medium of the fire tubes F, the base chamber charge B. -Thelatter brings the illuminating mass of the under illuminating body toignition. After the ignition of the base chamber charge, bothilluminating bodies will be ejected through the medium of the drivingrdisk C. By this step', the front end bushing E, with the fuse D,separates from the projectile shell. As soon as the illuminating bodieshave left. the projectile shell. the bushings M and N are scattered bycentrifugalforce. The resistance of the aii -:ien acts upon the parachutes L and uutolds them. The illuminats ing bodies, while theirilluminating masses burn, fall slowly, to the earth. After the expulsion of the lighting bodies from the projeetile, said bodies togetherwith their parachutes partake of the rotation of the projectile. Thespeed of the revolution of the illuminating bodies diminishes moreslowly4 than that of the (lighter) paracliutes, so that ailative turningbetween the illiimimating bodies and the paraehutes takes place. Thisrotation is permittedl by the rotary connection between the lightingbody and the parachute, afforded by the swivel h and the stud if',without twisting the cords connecting the parachutes with theilluminating bodies; the unfoldinv of the parachutes will thus 'beinsured b their rotatable connections with the luminating bodies.

By the arrangement of the illuminating bodies in such a manner that theilluminating mass of the one illuminating body stands in communicationwith the igniting charge of the time fuse and the illuminating mass ofthe other illuminating body stands in communication with the basechamber charge, a more certain ignition of the illuminating masses isobtained. Furthermore, by having the illuminating bodies use the samedimensions as the internal diameter of the pro'ectile as well as byusing the described bus ings for releasing the paracliutes instead ofspace consuming springs, there is attained the advantage of keeping thedimensions of the illuminating mass and the parachutes very large. Theilluminating bodies thus possess a stron" illuminating etl'ect withgreat burning an falling duration.

I claim:

1. An illuminating rojectile comprising a projectile shell a ase-chambercharge, an( an illuminating body having a parachute contained within andadapted to be expelled from the shell during the flight of theprojectile; the diameter of said illuminating body being equal to theinternal diameter of the projectile shell. lows: The i'ire of theignit-ing charge d 2. An illuminating projectile comprising a projectileshell, aving a base-c amber charge; and two superposed illuminatingbodies, each having a parachute and locate within the shell and adaptedto be expelled therefrom, as a whole, during the fli ht of theprojectile; the diameter of each i lumiiiating body corresponding to theinternal diameter of the projectile shell.

3. In an illuminating projectile, a projectile shell havingI a base-camber charge and a front-end igniting charge, and two illiimiiiatingbodies superposed in said shell, each having an illuminating mass' saidilluiniiiating bodies being introduced. one with its illuminating massin igniting relation to. the igniting charge and the other withitsilluminating mass -in igniting relation to the base-chamber charge.

4. In un illuminating project-ile havin a shell with a base-chambercharge an a front-end ignitin r charge; two illuminatingbodiessuperposedin the projectile shell and adaptekl to be expelledtherefrom by said base-chamber char during the flight of the projectile;each o said illuminating bodies eing provided with an illuminatingsubstance and with a parachute, and being introduced with theirilluminating masses presented toward and in igniting relation to therespective charges in the shell and with their parachutes confinedbetween the said illuminating bodies.

5. In an illuminating rojectile havin a shell with a base-cham er chargean a front-end igniting charge; two illuminating bodies superpgsed inthe projectile shell and adapted to expelled therefrom by saidbase-chamber char e durin the flight of the project-ile; eac of saidilluminating bodies being (provided with an illuminating substance anwith a parachute, and being introduced with their illuminating massespresented toward and in igniting relation to the respective charges inthe shell and with their parachutes confined between the saidilluminating bodies, there bein a sepalattieig disk in said shellbetween said parac u 6. In an illuminating projectile having a therespective clia'rges in adapted to sentedtoward and in .substance anintroduced with their illuminating mames f presented shell with a.base-chamber lcharge and a front-end -ignitin charge ;r two illuminatin4bodies super cse in the projectile shell an adapted to expelledtherefrom by said base-,chamber char during the night of the ,lprojectile; eac of said illuminating bodies being (provided with anilluminating substance an with a parachute, and being introduced withtheir Iilluminatin masses presented toward and in igiiiting re ation to't e shell and with their parachutes confined between the saidilluminating bodies; said shell having a arachutes andbushingsurrounding said abutting both illuminating ies, whereb the latter areboth driven from the sh l without injury to the parachutes. 7. In anilluminating rojectile havin a shell with a base-cliam r charge anv afront-end ignitin charge; two illuminatin bodies super ose in theprojectile shell and' expelled therefrom by said base-chamber charduring the night of the yrojectile; each o said illuminating bodies .ingprovided with an illuminating substance and with a parachutez and beingintrcduced with their illuminating masses prerelation to the respectingcharges in the s ell andvwith their parachutes confined between'the saidilluminating bodies; said shell having busli- -ings surrounding saidparachutes, adapted to, abut a inst therespective illuminating` .bodiesan' to telescope one within the other,

in assemblin the parts.

8. In an i uininating perojectile havin a shell with a' base-cham rcharge an a front-end ignitin charge; two illuminatin bodies super )osein theprojectile shell an adapted to y expelled therefrom by saidbase-chamberchar e durin the night of the projectile; eac of saidilluminating bodies being (provided with anilluminating with aparachute, and being toward and in igniting relation to therespectivecharges in the shell and with their parachutes connnedbetweeii the said illuminating bodies; said shell having a bushing'lirrounding said go'araehutes and abutting both illuminating' dies,whereb the llatter are both driven from the sh l without in-'urv to theparachutes; said surrounding ushing being divided longitudiiially intoparts separable to release the pnrachutes when ex lled.

'.9. In an illumina ing gerojectile ha a shell with a basecham r chargean a front-end ignitin charge; two illuminati bodies super ose in theprojectile shell aili adapted to expelled therefrom by said base-chambercharge during the night of the projectile; each ofsaid illuminatingbodiesI being providedrwith an illuminating substance and with aparachute, and being introduced with their illuminating masses presentedtoward and in igniting relation to the respective charges in the shelland with their parachutes confined between the said illuminating bodies;said shell having bush ings surrounding said parachutes, adapted instthe respective illuminating to abut a bodies an to telescope one withinthe other, in assemblin thy partsyeach of said telesco ing bushingsbeing divided longitudinal y into parts readily separable to release theparachute when expelled from the shell.

10. In an illuminating projectile having a base-,chamber charge-and aropelling dt-:k adapted to be driven forwa b said charge during thenight of the projecti e; an illuminating body com rising a containerresting u on the propel ing disk and carryin an .il uminating mass andhaving a parac nte packed in the shell bcyond the said container thepropelling isk and the bottom of said container being perforated topermit ignition of the illuminating mass from the base-chamber charge.

11. In an illuminating projectile having a shell with a base-chambercharge, a propelling disk thereover,a time `fuse-head and a frangiblebushing coupling the fuse-head 'to the shell; a pair of illuminatinbodies lwith parachutes in said shell; sai

illumilisting bodies comprising containers fitting the internaldiameterc'f theshell and carrying illuminating masses, said containersbeing abuttedrespectively ainst the base charge ropelling disk, an, thefuse-head, with t eir arachutes connned between them, and said shellcontaining a bushing surrounding Athe parachutes and abutting againstthe respective containers and transmitting the expelling thrust from oneillnminating body to the other .without injury to the arachutes.

12. n an illuminating projectile having a shell with a base chambercharge, an illuminoting body with'parachute confined within said s ell,coaxially withits axis, and ada ted to be expelled during the night ofhe projectile; said parachute having its cords cr uniting'it withtheilluminating body, connected tothe latter by a swi'vel lying inAiaiiiii'i' Nmap.

